Bug 1254078
| Summary: | SCSI INQUIRY command takes no effect in ppc64 be guest | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Gu Nini <ngu> |
| Component: | qemu-kvm-rhev | Assignee: | David Gibson <dgibson> |
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.2 | CC: | knoel, michen, qzhang, shuyu, virt-maint, xuhan, xuma, zhengtli |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | ppc64le | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2015-08-18 16:52:37 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
The virtio block device won't respond to SCSI INQUIRY commands because it is not a SCSI device. If you want SCSI INQUIRY you'll need to use either the virtio-scsi or spapr-vscsi interfaces. |
Description of problem: When execute the SCSI INQUIRY related command 'sg_inq /dev/xxx' or 'sg_dd if=/dev/xxx blk_sgio=1 bs=512 count=1' inside the ppc64 be guest, it takes no effect, i.e. there is not any output for the commands, while there is no the problem for ppc64 le guest Version-Release number of selected component (if applicable): Host kernel: 3.10.0-304.el7.ppc64le Guest kernel: 3.10.0-304.el7.ppc64 Qemu-kvm-rhev: qemu-kvm-rhev-2.3.0-16.el7.ppc64le How reproducible: 100% Steps to Reproduce: 1. Create a scsi_debug disk in the host: #modprobe scsi_debug lbpu=1 lbpws=1 #lsscsi ...... [0:2:4:0] disk IBM IPR-0 5DBA7D00 /dev/sde [0:3:0:0] no dev IBM 57D7001SISIOA 0150 - [1:0:0:0] disk Linux scsi_debug 0004 /dev/sdf 2. Start a be guest with the scsi_debug disk and set 'scsi=on': -drive id=drive_image1,if=none,cache=none,snapshot=off,aio=native,file=/dev/sdf,format=raw -device virtio-blk-pci,id=image1,drive=drive_image1,bus=pci.0,addr=09,scsi=on 3. Inside the guest, install 'sg3-utils', then issue following SCSI INQUIRY related commands for the scsi_debug disk: #ll /dev/vd* [root@dhcp106-242 ~]# ll /dev/vd* brw-rw----. 1 root disk 252, 0 Aug 17 02:22 /dev/vda brw-rw----. 1 root disk 252, 1 Aug 17 02:22 /dev/vda1 brw-rw----. 1 root disk 252, 2 Aug 17 02:22 /dev/vda2 brw-rw----. 1 root disk 252, 3 Aug 17 02:22 /dev/vda3 brw-rw----. 1 root disk 252, 16 Aug 17 02:22 /dev/vdb [root@dhcp106-242 ~]# sg_inq /dev/vdb [root@dhcp106-242 ~]# sg_dd if=/dev/vdb blk_sgio=1 bs=512 count=1 [root@dhcp106-242 ~]# 4. Quit the guest, and restart the guest with the scsi_debug disk but set 'scsi=off' similar to step2 5. Inside the guest, issue SCSI INQUIRY related commands for the scsi_debug disk similar to step3 Actual results: In both steps 3 and 5, there isn't any output for the 2 SCSI INQUIRY related commands Expected results: The SCSI INQUIRY related commands should take effect as that in the host and le guest: [root@ibm-p8-rhevm-10 home]# sg_inq /dev/sdf standard INQUIRY: PQual=0 Device_type=0 RMB=0 version=0x05 [SPC-3] [AERC=0] [TrmTsk=0] NormACA=0 HiSUP=0 Resp_data_format=2 SCCS=0 ACC=0 TPGS=0 3PC=0 Protect=0 [BQue=0] EncServ=0 MultiP=1 (VS=0) [MChngr=0] [ACKREQQ=0] Addr16=0 [RelAdr=0] WBus16=0 Sync=0 Linked=1 [TranDis=0] CmdQue=1 [SPI: Clocking=0x0 QAS=0 IUS=0] length=96 (0x60) Peripheral device type: disk Vendor identification: Linux Product identification: scsi_debug Product revision level: 0004 Unit serial number: 4000 [root@ibm-p8-rhevm-10 home]# [root@ibm-p8-rhevm-10 home]# [root@ibm-p8-rhevm-10 home]# sg_dd if=/dev/sdf blk_sgio=1 bs=512 count=1 a%c !�8U�1+0 records in 1+0 records out Additional info: